: level index. c/c: configuration and core description. description from NIST, LS description from our CbA calculations. Unprimed for core 2P3/2, primed for core 2P1/2. Symbols *, , ° denote the most strongly mixed levels; all the levels with the same within a same configuration are mixed. P.N.: Paschen notation. E. exp.: experimental energy from NIST in cm−1. Char.: character of the level: transitory/metastable/quasimetastable.